Biologically-synthesized chemicals (or their derivatives) that cause growth suppression or death of bacteria. Other anti-microbials are often also considered under the class antibiotics these days.

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138 views

Can Helicobacter pylori be eradicated naturally?

This question is not to discuss whether substances that have anti-H. pylori activity work or not, or to discuss the pros and cons of such but from a medical perspective. Assuming that one is able to ...
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1answer
90 views

Why is the penicillin/ceftriaxone hypersensitivity test only done once?

I have had a severe bacterial infection. I was prescribed ceftriaxone, and when the time came for injecting it the nurse asked me whether I have an allergy to ceftriaxone. I answered that it's my ...
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43 views

How does drug-induced photosensitivity work?

Some drugs (tetracyclines, for instance) can cause photosensitivity reactions—that is, some patients become extremely sensitive to the sun, developing rashes or inflammation after spending time ...
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0answers
101 views

What is this red liquid produced by a fungal colony?

In a jar, where I had some orchid plants, a fungi start growing few days ago. I removed the plants and let the fungi to expand and grow more. After some days, red drops started to appear on the ...
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31 views

“Antibiotic resistance” equivalent in archaea for selection during cloning

I'm beginning to work with halophilic archaea and I'm trying to figure out a good way to select for cells that have taken up a plasmid. Obviously, one can't use antibiotic resistance since they are ...
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28 views

After a bacterial infection is dealt with, do any of that colony of bacteria remain?

Suppose that I get a bacterial infection, which my immune system deals with. Are there any remnant bacteria, or are they all gone? Now consider the same scenario, but having been treated with a full ...
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0answers
18 views

Effective Mycoplasma Elimination from Primary Human Cultures

Obviously the best way to avoid mycoplasma contamination is to avoid it in the first place. In our case, however, it is not possible to avoid. We are culturing viruses and tissues out of human nasal ...
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0answers
32 views

Why are treatment periods with antibiotics longer than 1-2 days?

Antibiotics are given prophylactically for several indications (e.g. prior to dental surgery). Why are the treatment periods for prophylactic antibiotics much shorter than when treating an ...
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58 views

Why doesn't one develop immunity to bacterial STIs?

Why doesn't one develop immunity to STIs such as Chlamydia/Gonorrhea and Syphilis even after the first exposure and treatment with antibiotics?
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26 views

Do bacteria develop a resistance to antimicrobial peptides at the same rate as against “regular” antibiotics?

From what I understand, antimicrobial peptides are roughly grouped into three structural sets, with large variations present between different groups as well as within the groups. Their anti-microbial ...
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21 views

Which anti-fungal compounds effective against Grosmannia clavigera?

Grosmannia clavigera ("Blue Stain Fungus") is the fungus introduced by Dendroctonus ponderosae ("Mountain Pine Beetle") when they infest their host (several species of Pinus). Are there any known ...
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0answers
27 views

30s ribosomal Inhibitor (Antibiotic)Question

I have a question regarding the mode of action of 30s ribosomal Inhibitors (antibiotcs) - tetracyclines. According to some online resources, the antibiotics enter the A-site, which prevents other tRNA ...
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19 views

Feasibility of “smart effective microorganisms”

This might be a stupid question as I have little to no knowledge of biology, but I would really like to find out if it would be feasible to make such a system as a way of preventing infections. I ...
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18 views

How can I add metal ions in protein model with desired ligand?

I am working on docking study of different antibiotics. I want to check metal effect on the docking site or any active site in protein. So how can I add it with ligand? any docking tools are available ...
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0answers
16 views

What is the effect of antibiotic chloramphenicol on bacterial size?

When low amounts of antibiotics like Chloramphenicol is added in a bacterial culture, the steady-state growth rate decreases but what happens to the steady-state size? Can anybody please refer me to ...